<template>
  <el-card class="introduce">
    <div class="order">
      <el-card class="order-item">
        <template #header>
          <div class="card-header">
            <span>今日订单数</span>
          </div>
        </template>
        <div class="item">1888</div>
      </el-card>
      <el-card class="order-item">
        <template #header>
          <div class="card-header">
            <span>今日日活</span>
          </div>
        </template>
        <div class="item">36271</div>
      </el-card>
      <el-card class="order-item">
        <template #header>
          <div class="card-header">
            <span>转化率</span>
          </div>
        </template>
        <div class="item">20%</div>
      </el-card>
    </div>
    <div id="zoom"></div>
  </el-card>
</template>

<script>
import { onMounted, onUnmounted } from 'vue'

let myChart = null
export default {
  name: 'Index',
  setup() {
    onMounted(() => {
      if (window.echarts) {
        // 基于准备好的dom，初始化echarts实例
        myChart = window.echarts.init(document.getElementById('zoom'))

        // 指定图表的配置项和数据
        const option = {
          title: {
            text: '系统折线图'
          },
          tooltip: {
            trigger: 'axis',
            axisPointer: {
              type: 'cross',
              label: {
                backgroundColor: '#6a7985'
              }
            }
          },
          legend: {
            data: ['新增注册', '付费用户', '活跃用户', '订单数', '当日总收入']
          },
          toolbox: {
            feature: {
              saveAsImage: {}
            }
          },
          grid: {
            left: '3%',
            right: '4%',
            bottom: '3%',
            containLabel: true
          },
          xAxis: [
            {
              type: 'category',
              boundaryGap: false,
              data: ['2021-03-11', '2021-03-12', '2021-03-13', '2021-03-14', '2021-03-15', '2021-03-16', '2021-03-17']
            }
          ],
          yAxis: [
            {
              type: 'value'
            }
          ],
          series: [
            {
              name: '新增注册',
              type: 'line',
              stack: '总量',
              areaStyle: {},
              emphasis: {
                focus: 'series'
              },
              data: [120, 132, 101, 134, 90, 230, 210]
            },
            {
              name: '付费用户',
              type: 'line',
              stack: '总量',
              areaStyle: {},
              emphasis: {
                focus: 'series'
              },
              data: [220, 182, 191, 234, 290, 330, 310]
            },
            {
              name: '活跃用户',
              type: 'line',
              stack: '总量',
              areaStyle: {},
              emphasis: {
                focus: 'series'
              },
              data: [150, 232, 201, 154, 190, 330, 410]
            },
            {
              name: '订单数',
              type: 'line',
              stack: '总量',
              areaStyle: {},
              emphasis: {
                focus: 'series'
              },
              data: [320, 332, 301, 334, 390, 330, 320]
            },
            {
              name: '当日总收入',
              type: 'line',
              stack: '总量',
              label: {
                show: true,
                position: 'top'
              },
              areaStyle: {},
              emphasis: {
                focus: 'series'
              },
              data: [820, 932, 901, 934, 1290, 1330, 1320]
            }
          ]
        }

        // 使用刚指定的配置项和数据显示图表。
        myChart.setOption(option)
      }
    })
    onUnmounted(() => {
      myChart.dispose()
    })
  }
}
</script>

<style scoped>
.introduce .order {
  display: flex;
  margin-bottom: 50px;
}
.introduce .order .order-item {
  flex: 1;
  margin-right: 20px;
}
.introduce .order .order-item:last-child{
  margin-right: 0;
}
#zoom {
  min-height: 300px;
}
</style>
